I missed that, so thanks for highlighting that one. And that's pretty interesting, because I'd imagine that pornography producers are amongst those whose IP is most often stolen. But you're right: according to Forbes, "The [Porn / Adult Entertainment] industry is tiny next to broadcast television ($32.3 billion in 1999 revenue, according to Veronis Suhler), cable television ($45.5 billion), the newspaper business ($27.5 billion), Hollywood ($31 billion), even to professional and educational publishing ($14.8 billion)."
http://www.forbes.com/2001/05/25/0524porn.html